Symantec's latest State of Spam report (PDF) released today seems to corroborate the trend.

今日公布的赛门铁克公司(Symantec)有关垃圾邮件(PDF格式)最新情况的报告，似乎证实了这一趋势。

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If too many users report spam from an app, Facebook will restrict its distribution.

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Users can report spam and flag deceitful posts, but that is the extent of it.

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At Facebook, the company's site-integrity team spends its days and nights scanning for spikes in what users report as spam, and other unusual activity, such as friend request rejections.

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